How Do Pressure Washers Work?

Pressure washers are priceless during the summer months. They can do a wide range of jobs, from cleaning bikes and cars to fences, decking, patios, garden furniture, and even guttering. Given the importance of this equipment, it is important to know how pressure washers work. But first:

Main Components of a Pressure Washer

1. Water Inlet

The hose that delivers water from the main water supply to the pressure washer. It usually comes with a filter to keep out dirt and debris, which can clog up the washer or come out blasting from the other side at high speeds.

2. Water pump

The water pump is the core of a pressure washer. It is driven by the gas engine or electric motor. Pumps can handle a water-flow of about 1 to 2 gallons (4 to 8 l) per minute.

3. Gas engine/electric motor

Majority of the smaller pressure washers can work with the domestic power supply, while bigger models require compact gasoline engines. The latter is ideal when the place you are working at does not have electricity supply. The work of the engine or motor is basically to run the water pump.

4. High-Pressure Hose

This is a tube that leads from the pressure washer to the cleaning attachment you are using. The water flowing through comes with too much pressure for a regular bit of tubing to handle. The high-pressure hose is protected by wire mesh and contains at least two layers of high-density plastic.

5. Cleaning Attachment

Powered attachments rely on the force of the water flowing through. Depending on what you are cleaning, you can shift from a trigger gun to a rotating brush or a spinning wand to clean your drive.

Working Mechanism: How Do Pressure Washers Work

The electric motor is the heart of the pressure washer – it’s work is to drive the pump system. Pumps require water to work properly, which can be delivered by a garden hose (for example). The water passes into a double-layered casing around the motor that cools it down before it is put under pressure. The purpose of this is to reduce noise and simultaneously extend the equipment’s run time.

The motor runs a wobble plate that moves the 3 attached pistons up and down. The pistons work with individual suctions and pressure valves. When they go down, water is drawn through a suction valve and into the piston chamber or cylinder. When they move up again, water is pushed out of the chamber and into the injector via a pressure valve.

If needed, you can add a cleaning agent into the injector. Water then flows from the pump to the high-pressure gun. All of this happens too fast that once the device is turned on, you can instantly press the button to start cleaning. Some pressure washers come with an LED screen at the trigger gun that displays the pressure level you have selected, alongside an example application. As a result, finding the most suitable setting for each application is quite easy.

In addition to its remarkable cleaning performance, a pressure washer saves a lot of water too. This is because while a garden hose uses about 3,500 litres of water an hour, the pressure washer uses only 400-600 litres.

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